Assertion: Dominance is not always an autonomous feature of gene or its product.

Reason: Occasionally a single gene product may produce more than one effects.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Subtopic:  Monohybrid Cross: 1 | Polygenic Inheritance & Pleiotropy |
 58%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A heterozygous plant produces:
1. Only one kind of gamete

2. Two kinds of gametes each having one allele with equal proportion.

3. Two kinds of gametes each having two alleles with equal proportion.

4. Two kinds of gametes each having one allele with one allele occurring in more gametes than the other.

Subtopic:  Monohybrid Cross: 1 |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What is the F2 phenotypic ratio in cases of incomplete dominance?
1. 1 : 1

2. 3 : 1

3. 1 : 2 : 1

4. 1 : 1

Subtopic:  Dominance Deviation from Mendel: 1 |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Occasionally, a single gene product may produce more than one effect. Such a gene is said to be:
1. Pleiotropic

2. Polygenic

3. Psuedoallele

4. Housekeeping

Subtopic:  Polygenic Inheritance & Pleiotropy |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

‘When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters’. This is the statement of:


1. Law of Dominance

2. Law of segregation

3. Law of Independent Assortment

4. Law of Linkage

Subtopic:  Dihybrid Cross: Details |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Mendelian disorders are mainly determined by:
1. Alteration or mutation in a single gene.
2. Chromosomal gross structural changes.
3. Recombination between linked genes.
4. Jumping genes

Subtopic:  Mendelian Disorders |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The point mutation leading to sickle cell anaemia occurs:


1. at sixth position in the beta chain of haemoglobin
2. at sixth position in the alpha chain of haemoglobin
3. at sixth position in the beta chain of myoglobin
4. at sixth position in the alpha chain of myoglobin

Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 89%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In cases of Phenylketonuria:


1. The affected individual lacks an enzyme that converts the amino acid tyrosine into phenylalanine.

2. The affected individual makes an enzyme that converts the amino acid tyrosine into phenylalanine.

3. The affected individual makes an enzyme that converts the amino acid phenylalanine into tyrosine.

4. The affected individual lacks an enzyme that converts the amino acid phenylalanine into tyrosine.

Subtopic:  Mendelian Disorders |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Monosomy means:
1. Lack of one pair of chromosomes
2. Lack of one of any one pair of chromosome
3. Presence of an extra chromosome
4. Presence of an extra set of chromosomes

Subtopic:  Non - Disjunction & Aneuploidy |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What is the genetic disorder in which an individual has an overall masculine development gynaecomastia, and is sterile?

1. Down's syndrome 2. Turner's syndrome
3. Klinefelter's syndrome 4. Edward syndrome
Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 83%
From NCERT
NEET - 2019
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh